Skullpact Veteran

Morphbond {3}{g}{g} (You may cast this face down as a 2/2 creature for {3}. Turn it face up any time for its morphbond cost. When it is turned face up, pair it with another creature)
As long as Skullpact Veteran is paired with another creature, they both have hexproof.
If it is the target of a spell or ability controlled by an opponent, Skullpact Veteran's morphbond cost is {0}.